Another developed a sperm granuloma, which is basically a lump of sperm outside the vas deferens that could become painful.

一个患上了精子肉芽肿，这基本上是输精管外的一团精子，可能会变得疼痛。

Some were given a traditional vasectomy, others an injection of the new material and the rest injected with saline, as a control.

一些老鼠接受了传统的输精管结扎术，一些注射了新材料，其余的注射了生理盐水作为对照。

But the procedure is largely irreversible: it involves stopping the flow of sperm from the testes by cutting conduits known as the vas deferens and sealing them or tying them off.

包括通过切割被称为输精管的管道来阻止精子从睾丸流出，们密封或打结。

But the researchers looked at other rhesus monkey health data they had collected, too, and found that sperm granulomas seemed to be more common in monkeys with vasectomies than in the group with Vasalgel.

但研究人员也查看了他们收的其他恒河猴健康数据，发现精子肉芽肿似乎在接受输精管切除术的猴子中比接受 Vasalgel 的猴子更常见。